PT-2021-5542 · Apache+11 · Apache Http Server+11
Chamal
·
Published
2021-12-20
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Updated
2026-03-10
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CVE-2021-44790
CVSS v2.0
10
Critical
| Vector | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Apache HTTP Server versions 2.4.51 and earlier
Description
A carefully crafted request body can cause a buffer overflow in the mod lua multipart parser, specifically when the
r:parsebody() function is called from Lua scripts. The Apache httpd team is not aware of an exploit for this issue, though it might be possible to craft one. This can potentially allow a remote attacker to execute arbitrary code by sending a specially formed HTTP request.Recommendations
For Apache HTTP Server versions 2.4.51 and earlier, consider disabling the mod lua module or restricting its use until a patch is available. As a temporary workaround, avoid using the
r:parsebody() function in Lua scripts to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this issue.Exploit
Fix
Memory Corruption
Buffer Overflow
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Related Identifiers
Affected Products
Alt Linux
Almalinux
Apache Http Server
Astra Linux
Centos
Linuxmint
Apple Macos
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu